Byron boardman



TINTTFT) STATE@ PATENT OFFTCF.

BYRON BOARDMAN, OF NORW'ICH, CONNECTICUT.

STAPLE FOR BLIND-SLATS.

Specification forming part of Letters Patent No. 19,747, dated March 30, 1858; Ressued March 6, 1866, No. 2,183.

To all whom it may concern:

Be it known that I, BYRON BOARDMAN, of Norwich, in New London county and State of Connecticut, have invented a new and Improved Mode of Constructing the Vire Sta-ples for Connecting Blind-Slats to a Rod to Guide and Govern Their Positions, and that the following is a clear and exact description of the construction of the same, reference being had to the accompanying drawings, making part of this specication.

The nature of my invention consists in constructing the wire staples for connecting the slats of window blinds, and screens, with indentations on the part which is to be driven into the wood, and tapering and pointing the penetrating branches of the staples in order that they may be applied or driven more readily without previous' boring in the wood, and that they may sustain greater force without being drawn out.

In the drawing Figure l a, b, 0, (Z, represent an enlarged plan view of one of these staples, with the side toward the observer; e, j, g, h, is a diagonal view exhibiting the edge of one of the staples interlocked with the former. These are shown as it completed and in positions relatively as when set. Fig. 2 represents the same staples after being bent in shape, and before being serrated with indentations; the points being beveled edgewise as shown at fand 7.1.. These staples should be from three to tive eighthsv of an inch long, with about of an inch spread, and made of wire, from No. 18 to 2O wire gage. These staples after being prepared as shown at Fig. 2, are subjected to the action of dies with serrated ridges, to produce corresponding indentations in the staples; and so set as to press harder, or come to a closer contact as they approach the points a, c, than at a distance therefrom, as at Z), d. By this means t-he impressions are deeper toward the piercing 'points than near b, Z and therwire is spread and made to taper a little toward the point; the pressure of the dies acting at and near the extreme point, causes the beveled extremities f L, Fig. 2, to assume a central position as shown at f, 71 Fig. l; and the same action will also give a rounded edge in the other grooves as herein described, are, first, they may be made shorter than the ordinary staples which are not clenched, and hence will allow of a much smaller rod as they will sustain from three to four times greater strain without being drawn out. Second, they will also dispense with the necessity of clenching altogether, and will hold the rod equally as well, as that variety called the iishhook staple while the rod is not bruised or defaced, as when the staple is clenched. Third, they will hold as well in the slat where clenching is impracticable, as in the rod, and not be liable to be drawn out by turning the slats. Finally, they may be driven without previously piercing the rod or slat, as the peculiar form of the points enables them to part the gra-in of the wood 'and enter without breaking the fiber, which as the staple is driven, closes into its indentations and holds it firmly embedded in the wood.

I am aware that spikes, bolts and staples for various uses have been cut with'trans.

verse furrows, and bearded diagonally1 and otherwise, for the purpose of holding` with greater force when driven into wood; and

that stems or shanks of iishhooks have been hooks or any other article except the wire i staples, such as are used for the slats of window blinds and screens. Neither do I claim the production of staples of any kind when not pointed or serrated, as above described. But

What I claim as my invention and for which I solicit Letters Patent is- Constructing Wire staples7 (such as are' used for connecting the semi-revolving slats of Window blinds and screens to a rod governing their positions) by giving them a rounded edge in the direction as shown at a, c, Fig. l, and an acute or sharp edge as viewed crossWise as at f h, in combination With transverse indentations across the Wire 10 the Whole being formed by compression between dies substantially as described.

BYRON BOARDMAN. Witnesses:

N. SGHOLFIELD, CHARLES H. HINCKLEY.

[FIRST PRINTED 1912.] 

